Joseph W. Mongan was an Irish

Ireland

Ireland is an island to the northwest of continental Europe. It is the third-largest island in Europe and the twentieth-largest island on Earth...

 politician. He was an unsuccessful candidate at the June 1927 general election, but was elected to Dáil Éireann

Dáil Éireann

Dáil Éireann is the lower house, but principal chamber, of the Oireachtas , which also includes the President of Ireland and Seanad Éireann . It is directly elected at least once in every five years under the system of proportional representation by means of the single transferable vote...

 as a Cumann na nGaedheal Teachta Dála

Teachta Dála

A Teachta Dála , usually abbreviated as TD in English, is a member of Dáil Éireann, the lower house of the Oireachtas . It is the equivalent of terms such as "Member of Parliament" or "deputy" used in other states. The official translation of the term is "Deputy to the Dáil", though a more literal...

 (TD) for the Galway

Galway (Dáil Éireann constituency)

Galway was a parliamentary constituency represented in Dáil Éireann, the lower house of the Irish parliament or Oireachtas from 1921 to 1937. The method of election was the single transferable vote form of proportional representation .- History :...

 constituency at the September 1927 general election. He was re-elected at the 1932 general election

Irish general election, 1932

The Irish general election of 1932 was held on 16 February 1932, just over two weeks after the dissolution of the Dáil on 29 January. The newly elected 153 members of the 7th Dáil assembled at Leinster House on 9 March 1932 when the new President of the Executive Council and Executive Council of...

 but lost his seat at the 1933 general election

Irish general election, 1933

The Irish general election of 1933 was held on 24 January 1933. The newly elected members of the 8th Dáil assembled at Leinster House on 8 February when the new President of the Executive Council and Executive Council of the Irish Free State were appointed....

. At the 1937 general election

Irish general election, 1937

The Irish general election of 1937 was held on 1 July 1937, just over two weeks after the dissolution of the Dáil on 14 June. A plebiscite to ratify the Constitution of Ireland was held on the same day...

, he was elected as a Fine Gael

Fine Gael

Fine Gael is a centre-right to centrist political party in the Republic of Ireland. It is the single largest party in Ireland in the Oireachtas, in local government, and in terms of Members of the European Parliament. The party has a membership of over 35,000...

 TD for the Galway West constituency. He was re-elected at each subsequent general election and served until his death in 1951.